Gas-phase flame synthesis and characterization of iron oxide nanoparticles for use in a health effects study

Bing Guo, Ian M. Kennedy

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Iron oxide nanoparticles, to be used in a health effects study, were synthesized in a H2/air diffusion flame and characterized by transmission electron microscopy, X-ray diffraction, surface area measurement, inductively coupled plasma mass spectrometry, and a spectrophotometric speciation method. The nanoparticles exhibited the maghemite (γ-Fe2O3) crystal structure and contained only trivalent iron. There were two size modes in the particles. The large size mode contained crystalline, non-agglomerated particles with a median diameter of approximately 45 nm; the small size mode contained particles that were in the size range of 3-8 nm and were mostly amorphous. Depending on the value taken for the small particle size, the small mode accounted for 73-82% of the particle surface area. The particles in the small size mode were likely formed from the vapor of FeO and Fe.

Original languageEnglish (US)
Pages (from-to)944-951
Number of pages8
JournalAerosol Science and Technology
Volume41
Issue number10
DOIs
StatePublished - Oct 2007

Fingerprint

Flame synthesis
Iron oxides
iron oxide
Gases
Health
Nanoparticles
Inductively coupled plasma mass spectrometry
gas
Iron
Crystal structure
Particle size
Vapors
Crystalline materials
Transmission electron microscopy
X ray diffraction
surface area
Air
maghemite
crystal structure
range size

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Mechanical Engineering

Cite this

Gas-phase flame synthesis and characterization of iron oxide nanoparticles for use in a health effects study. / Guo, Bing; Kennedy, Ian M.

In: Aerosol Science and Technology, Vol. 41, No. 10, 10.2007, p. 944-951.

Research output: Contribution to journalArticle

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